Question: Who is {manager/director} of {European Southern Observatory} where {end time} is {1974-1-1} ?
Paraphrase: Who is {manager/director} of {European Southern Observatory} where {conclusion time} is {1974-1-1} ?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q151991 p:P1037 ?s . ?s ps:P1037 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1974')) }